"I must be the perfect patient for this medicine. My Dr. and pharmacist said to take it in the evening that way you would sleep through any of the light-headedness. I'm 65 years old and this is my first medicine I have taken. I noticed good results the first thing the next morning and it has been getting better all week long, also I have had the first full nights sleeps in over 10 years. I had a stronger stream, much easier starting and NO DRIBBLES at the end. Oh and I have not had ANY BAD sexual side effects, and my wife is HAPPY. So I can only say talk to you Dr. and follow his recommendations."